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last 30 patents
Information
Patent Grant
Apparatus for study of gas migration in cement slag
Patent number
5,465,609
Issue date
Nov 14, 1995
Total
Jacques Romieu
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for connecting magnetic measurements performed in a well thr...
Patent number
5,398,421
Issue date
Mar 21, 1995
Institut Francais du Petrole et Societe
Gilles Nicolle
E21 - EARTH DRILLING MINING